blockdev: clean up error handling in do_open_tray

[qemu.git] / os-win32.c

diff --git a/os-win32.c b/os-win32.c
index dfa90bce6ab35276f352e6fcdc59158869b289e8..ae9857448f671e3ea353365f7c033079ace46a1e 100644 (file)
--- a/os-win32.c
+++ b/os-win32.c
@@ -22,162 +22,103 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */

+#include "qemu/osdep.h"

 #include <windows.h>
 #include <windows.h>

-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <time.h>
-#include <errno.h>
-#include <sys/time.h>
-#include "config-host.h"
-#include "sysemu.h"
+#include <mmsystem.h>
+#include "sysemu/sysemu.h"
+#include "qemu-options.h"

 
 /***********************************************************/
 
 /***********************************************************/

-/* Polling handling */
+/* Functions missing in mingw */

 
 

-typedef struct PollingEntry {
-    PollingFunc *func;
-    void *opaque;
-    struct PollingEntry *next;
-} PollingEntry;
-
-static PollingEntry *first_polling_entry;
-
-int qemu_add_polling_cb(PollingFunc *func, void *opaque)
+int setenv(const char *name, const char *value, int overwrite)

 {
 {

-    PollingEntry **ppe, *pe;
-    pe = qemu_mallocz(sizeof(PollingEntry));
-    pe->func = func;
-    pe->opaque = opaque;
-    for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
-    *ppe = pe;
-    return 0;
+    int result = 0;
+    if (overwrite || !getenv(name)) {
+        size_t length = strlen(name) + strlen(value) + 2;
+        char *string = g_malloc(length);
+        snprintf(string, length, "%s=%s", name, value);
+        result = putenv(string);
+
+        /* Windows takes a copy and does not continue to use our string.
+         * Therefore it can be safely freed on this platform.  POSIX code
+         * typically has to leak the string because according to the spec it
+         * becomes part of the environment.
+         */
+        g_free(string);
+    }
+    return result;

 }
 
 }
 

-void qemu_del_polling_cb(PollingFunc *func, void *opaque)
+static BOOL WINAPI qemu_ctrl_handler(DWORD type)

 {
 {

-    PollingEntry **ppe, *pe;
-    for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
-        pe = *ppe;
-        if (pe->func == func && pe->opaque == opaque) {
-            *ppe = pe->next;
-            qemu_free(pe);
-            break;
-        }
-    }
-}
+    qemu_system_shutdown_request();
+    /* Windows 7 kills application when the function returns.
+       Sleep here to give QEMU a try for closing.
+       Sleep period is 10000ms because Windows kills the program
+       after 10 seconds anyway. */
+    Sleep(10000);

 
 

-/***********************************************************/
-/* Wait objects support */
-typedef struct WaitObjects {
-    int num;
-    HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
-    WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
-    void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
-} WaitObjects;
+    return TRUE;
+}

 
 

-static WaitObjects wait_objects = {0};
+static TIMECAPS mm_tc;

 
 

-int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
+static void os_undo_timer_resolution(void)

 {
 {

-    WaitObjects *w = &wait_objects;
-
-    if (w->num >= MAXIMUM_WAIT_OBJECTS)
-        return -1;
-    w->events[w->num] = handle;
-    w->func[w->num] = func;
-    w->opaque[w->num] = opaque;
-    w->num++;
-    return 0;
+    timeEndPeriod(mm_tc.wPeriodMin);

 }
 
 }
 

-void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
+void os_setup_early_signal_handling(void)

 {
 {

-    int i, found;
-    WaitObjects *w = &wait_objects;
-
-    found = 0;
-    for (i = 0; i < w->num; i++) {
-        if (w->events[i] == handle)
-            found = 1;
-        if (found) {
-            w->events[i] = w->events[i + 1];
-            w->func[i] = w->func[i + 1];
-            w->opaque[i] = w->opaque[i + 1];
-        }
-    }
-    if (found)
-        w->num--;
+    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
+    timeGetDevCaps(&mm_tc, sizeof(mm_tc));
+    timeBeginPeriod(mm_tc.wPeriodMin);
+    atexit(os_undo_timer_resolution);

 }
 
 }
 

-void os_host_main_loop_wait(int *timeout)
+/* Look for support files in the same directory as the executable.  */
+char *os_find_datadir(void)

 {
 {

-    int ret, ret2, i;
-    PollingEntry *pe;
-
-    /* XXX: need to suppress polling by better using win32 events */
-    ret = 0;
-    for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
-        ret |= pe->func(pe->opaque);
-    }
-    if (ret == 0) {
-        int err;
-        WaitObjects *w = &wait_objects;
-
-        ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
-        if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
-            if (w->func[ret - WAIT_OBJECT_0])
-                w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
-
-            /* Check for additional signaled events */
-            for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
-
-                /* Check if event is signaled */
-                ret2 = WaitForSingleObject(w->events[i], 0);
-                if(ret2 == WAIT_OBJECT_0) {
-                    if (w->func[i])
-                        w->func[i](w->opaque[i]);
-                } else if (ret2 == WAIT_TIMEOUT) {
-                } else {
-                    err = GetLastError();
-                    fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
-                }
-            }
-        } else if (ret == WAIT_TIMEOUT) {
-        } else {
-            err = GetLastError();
-            fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
-        }
-    }
+    return qemu_get_exec_dir();
+}

 
 

-    *timeout = 0;
+void os_set_line_buffering(void)
+{
+    setbuf(stdout, NULL);
+    setbuf(stderr, NULL);

 }
 
 }
 

-static BOOL WINAPI qemu_ctrl_handler(DWORD type)
+/*
+ * Parse OS specific command line options.
+ * return 0 if option handled, -1 otherwise
+ */
+void os_parse_cmd_args(int index, const char *optarg)

 {
 {

-    exit(STATUS_CONTROL_C_EXIT);
-    return TRUE;
+    return;

 }
 
 }
 

-void os_setup_signal_handling(void)
+int qemu_create_pidfile(const char *filename)

 {
 {

-    /* Note: cpu_interrupt() is currently not SMP safe, so we force
-       QEMU to run on a single CPU */
-    HANDLE h;
-    DWORD mask, smask;
-    int i;
+    char buffer[128];
+    int len;
+    HANDLE file;
+    OVERLAPPED overlap;
+    BOOL ret;
+    memset(&overlap, 0, sizeof(overlap));

 
 

-    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
+    file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
+                      OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

 
 

-    h = GetCurrentProcess();
-    if (GetProcessAffinityMask(h, &mask, &smask)) {
-        for(i = 0; i < 32; i++) {
-            if (mask & (1 << i))
-                break;
-        }
-        if (i != 32) {
-            mask = 1 << i;
-            SetProcessAffinityMask(h, mask);
-        }
+    if (file == INVALID_HANDLE_VALUE) {
+        return -1;

     }
     }

+    len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
+    ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
+                    NULL, &overlap);
+    CloseHandle(file);
+    if (ret == 0) {
+        return -1;
+    }
+    return 0;

 }
 }